GM Service Manual Online
For 1990-2009 cars only
Figure 1:

MIL, Instrument Panel, and the DLC


Object Number: 30371  Size: FS
Engine Controls Components
Powertrain Control Module (PCM)
Ignition Control and the Knock Sensor System
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Ignition Control and the Knock Sensor System


Object Number: 30372  Size: FS
Engine Controls Components
Information Sensors
Fuel Injectors
MIL, Instrument Panel, and the DLC
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 3:

Fuel Injectors


Object Number: 30375  Size: FS
Engine Controls Components
Fuel Metering System Components
Fuel Pump Relay and the Theft Deterrent System
Ignition Control and the Knock Sensor System
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 4:

Fuel Pump Relay and the Theft Deterrent System


Object Number: 30373  Size: FS
Engine Controls Components
Fuel Metering System Components
ECT, MAP, TP, IAT, and A/C Systems
Fuel Injectors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 5:

ECT, MAP, TP, IAT, and A/C Systems


Object Number: 30376  Size: FS
Engine Controls Components
Information Sensors
MAF, EVAP and EGR Systems
Fuel Pump Relay and the Theft Deterrent System
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 6:

MAF, EVAP and EGR Systems


Object Number: 30377  Size: FS
Engine Controls Components
Information Sensors
Heated Oxygen Sensors
ECT, MAP, TP, IAT, and A/C Systems
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 7:

Heated Oxygen Sensors


Object Number: 30378  Size: FS
Engine Controls Components
Information Sensors
IAC and Transmission Range Switch Systems
MAF, EVAP and EGR Systems
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 8:

IAC and Transmission Range Switch Systems


Object Number: 30379  Size: FS
Engine Controls Components
Information Sensors
Instrument Cluster and Vehicle Speed Sensor Systems
Heated Oxygen Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 9:

Instrument Cluster and Vehicle Speed Sensor Systems


Object Number: 30380  Size: FS
Engine Controls Components
Information Sensors
TCC and Brake Switch Systems
IAC and Transmission Range Switch Systems
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 10:

TCC and Brake Switch Systems


Object Number: 30381  Size: FS
Engine Controls Components
Powertrain Control Module (PCM)
Generator System
Instrument Cluster and Vehicle Speed Sensor Systems
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 11:

Generator System


Object Number: 30382  Size: FS
Engine Controls Components
Powertrain Control Module (PCM)
Heater and A/C Compressor Clutch Systems
TCC and Brake Switch Systems
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 12:

Heater and A/C Compressor Clutch Systems


Object Number: 30383  Size: FS
Engine Controls Components
Powertrain Control Module Controlled Air Conditioning
Engine Cooling Fans
Generator System
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 13:

Engine Cooling Fans


Object Number: 30384  Size: FS
Engine Controls Components
Electric Cooling Fan Diagnosis
Heater and A/C Compressor Clutch Systems
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice